205255236255253 has 4 divisors (see below), whose sum is σ = 205284596187328. Its totient is φ = 205225876323180.

The previous prime is 205255236255247. The next prime is 205255236255337. The reversal of 205255236255253 is 352552632552502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205255236255253 - 2⁵ = 205255236255221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205255236255253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205255230255253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14679955551 + ... + 14679969532.

It is an arithmetic number, because the mean of its divisors is an integer number (51321149046832).

Almost surely, 2^{205255236255253} is an apocalyptic number.

It is an amenable number.

205255236255253 is a deficient number, since it is larger than the sum of its proper divisors (29359932075).

205255236255253 is an equidigital number, since it uses as much as digits as its factorization.

205255236255253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29359932074.

The product of its (nonzero) digits is 27000000, while the sum is 52.

The spelling of 205255236255253 in words is "two hundred five trillion, two hundred fifty-five billion, two hundred thirty-six million, two hundred fifty-five thousand, two hundred fifty-three".